All 67 people on board the plane and the helicopter were killed. An American Airlines regional jet went down in the Potomac River near Washington, D.C.'s Ronald Reagan Washington National Airport ...

Stunning 911 audio has been released after shocked witnesses watched a plane crash into a small car while making an emergency landing on a Florida freeway. The fixed-wing Beechcraft 55 was attempting ...

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Abstract: Trajectories in the operational space, when conceived for manipulators with more then three degrees of freedom, impose the adoption of an orientation primitive for the end-effector. The ...